Numerical analysis of the thermal and fluid dynamic behavior of the flue gases in a traditional furnace for panela production
Introduction: Panela is a product derived from sugar cane that is prepared using a traditional burner designed especially for this purpose. According to studies found in the literature, it was identified that the thermal ef-ficiency of panela burners is 30% on average. Objective: The objective of th...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/380403 |
| Acesso em linha: | https://hdl.handle.net/2117/380403 https://dx.doi.org/10.17981/ingecuc.15.1.2019.12 |
| Access Level: | acceso abierto |
| Palavra-chave: | Furnaces Radiative transfer Heat - Radiation and absorption Turbulence CFD Turbulent flow Radiation heat transfer Industrial furnace Forns industrials Transferència radiativa Calor--Radiació i absorció Turbulència Àrees temàtiques de la UPC::Física::Termodinàmica |
| Resumo: | Introduction: Panela is a product derived from sugar cane that is prepared using a traditional burner designed especially for this purpose. According to studies found in the literature, it was identified that the thermal ef-ficiency of panela burners is 30% on average. Objective: The objective of this investigation is to con-tribute to the search for new alternatives for the im-provement of the low efficiency present on these systems, mainly affecting the flue gases duct. Methodology: The development of this study is as fol-lows: first, a research of the radiation and optical thick-ness effect in a simplified furnace is carried out. After-ward, a series of simulations with modifications in the design of the flue gas duct for a real size furnace are analyzed. Results:The results showed that the radiation effect must be considered and, even though the optical thick-ness is low, it has a relevant impact in the heat transfer process due to the high temperatures in the furnace. A chaotic movement of the gases implied more heat trans-ferred to the heaters and high values of Nusselt with the addition of new elements in the duct were obtained.Conclusions-Arrangement 1, provides the best results with a Nusselt and thermal efficiency increase. No sig-nificant differences between the DOM and the P-1 radia-tion were found. |
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